Slide bolt lock



Sept. 20, 1949.. n. o. HOLMSTEN SLIDE BbLT LOCK 2 Sheets-Sheet 1 FiledJune 18, 1948 Jf lz Sept. 20, 1949. N; o. HOLMSTEN 2,482,341

SLIDE BOLT LOCK Filed June 18, 1948 2 Sheets-Sheet 2 Offs I 2 {DINVENTOR.

17 BY W4 Patented Sept. 20, 1949 UNITED STATES PATENT OFFICE SLIDE BOLTLOCK Neil 0. Holmsten, New Rochelle, N. Y.

Application June 18, 1948, Serial No. 33,782

3 Claims. (01. 292-148) V This invention relates to a slide boltfastener for doors or the like and more particularly to a slide bolthaving locking means to prevent its unauthorized operation.

An object of the invention is to provide a slide bolt with locking meansso designed that it cannot be released by a burglar even after the glassin the door has been broken to afford access to the bolt.

Another object is to provide a slide bolt of the above type in which thelocking means is designed with a screw guard which covers the attachingscrews when the bolt is in locked position.

Various other objects and advantages will be apparent as the nature ofthe invention is more fully disclosed.

The invention will be better understood by referring to the followingdescription, taken in connection with the accompanying drawings in whicha specific embodiment thereof has been set forth for purposes ofillustration.

In the drawings:

Fig. 1 is a side elevation of a slide bolt embodying the presentinvention in locked position;

Fig. 2 is a top plan view of the bolt showing a portion of the door anddoor frame in horizontal section;

Fig. 3 is a side elevation similar to Fig. 1 showing the bolt inretracted position;

Fig. 4 is a top plan view of the bolt in the position of Fig. 3;

Figs. 5 and 6 are sections taken on the lines 55 and 6-6 respectively ofFig. 1;

Fig. 7 is a detail view of the stationary member shown in sideelevation;

Fig. 8 is a top plan view thereof;

Figs. 9 and 10 are sections taken on the lines 9-9 and |ll-Irespectively of Fig. 7

Fig. 11 is a detail view of the sliding member shown in side elevation;

Fig. 12 is a top plan view thereof;

Fig. 13 is a rear elevation thereof; and

Figs. 14 and 15 are sections taken on the lines I4 I4 and I-I5respectively of Fig. 11.

Referring first to Figs. 7 to 10, the stationary member is shown asformed from a blank of sheet metal and comprising a pair of attachingflanges IIJ having screw holes II for attachment to the door or the likeand having a central substantially cylindrical barrel section I2 adaptedto receive the slide bolt. The barrel section I2 is provided with arectangular slot I3 through which the actuating handle of the boltextends. A locksection I2 by suitable means, as by welding, and isprovided with a hole l5 adapted to receive a padlock, or the like. Thebarrel I2 and flanges Ill are separated by walls I! to form channels inwhich the guard plate of the sliding member is adapted to slide. For ashort distance from the rear end of the stationary member the Walls llare cut away to form slots I6 for the purpose to be described.

Referring now to Figs. 11 to 15, the sliding member is shown ascomprising a cylindrical bolt and a guard plate having side flanges 22and having for the greater portion of its length a slot 23 extendingbeneath the bolt 20. The rear end 24 of the bolt 20 is attached to theguard plate by suitable means, as by welding, and projects forwardlyover the slot 23, The flanges 22 are provided with holes 25 which, incertain positions of the flanges 22, are adapted to register with thescrew holes II of the flanges II] of the stationary member to provideaccess thereto for inserting the screws.

The bolt 20 is also provided with a hole 26 in which an actuating handle21 (Figs. 1 to 4) is secured.

Referring now to Figs. 1 to 6, the sliding member is first assembled inthe stationary member by sliding the bolt 20 into the barrel I2 from therear end thereof with the flanges 22 of the guard plate extending aboveand lying over the flanges ID of the stationary member and with thewalls I! sliding in the slot 23. The solid portion of the guard platebeyond the slot 23 enters the slots I6 of the stationary member topermit the sliding member and stationary member to be completelytelescoped. An actuating handle 21 is provided with a pin 3| (Fig. 4)which enters the hole 26 in the bolt 20 and is secured permanentlythereto, as by welding. The handle 21 is provided with a hole 32 whichaligns with the hole I5 in the ear I4 when the bolt is in latchingposition so that a padlock 35 may be passed through the aligned holesfor securing the bolt.

The stationary member is secured to a door panel by shifting the bolt sothat the holes 25 in the guard plate are brought into registration withthe holes II in the flanges II] to permit screws 4| to be insertedtherethrough. A keeper 42, which is similar in section to the stationarymember and comprises a barrel 43 and outwardly extending flanges 44, isattached to the door frame 45 by means of screws 46 in alignment withthe stationary member, so that when the bolt is advanced the boltextends into the barrel 43 in the ing ear [4 is attached to the side ofthe barrel usual manner for securing the door.

It will be noted that the end of the guard plate extends over theflanges 44 of the keeper for covering the screws 46, as shown in Figs. 1and 2. Hence the bolt cannot be withdrawn nor can the screws be removedexcept by first removing the padlock 35. When the padlock is removed thebolt may be retracted in the usual manner to the position indicated inFigs. 3 and 4. 1

It will be noted that the above described construction combines a screwguard with looking ears which is adapted to receive a padlock to preventunauthorized opening of the bolted door.

This device is particularly adapted for use in conneotion with doorshaving glass panels which. might otherwise be opened by an intruderbreaking the glass and reaching inside of'the door to release the bolt.

Although a specific embodiment has been shown, it is to be understoodthat the inventionis not to be restricted thereto, but that variouschanges and modifications may be made therein, as will be readilyapparent to a person skilled in the art. 7 e

What is claimed is: l

1. A slide bolt fastener for doors or the like, comprising a stationarymember having a central barrel adapted to receive abolt and outwardlyextending flanges to be screwed against the inside of a door, a keeperof similar cross section to be screwed against the door frame, and aslidable member comprising a bolt slidable in said barrel and extendibleinto said keeper, and a guard plate attached to said bolt and'slidable.therewith to cover the attaching screws oi both the stationary memberand the keeper, a locking ear carried by said stationary member and an.actuating handle carried by said bolt, said ear and handle having holesin registration when said'bolt is in locking position to receive apadlock tor securing the bolt against unauthorized actuation.

' '4 2. A slide bolt fastener for doors or the like, comprising astationary member having a central barrel adapted to receive a bolt andoutwardly extending flanges to be screwed against the inside of a door,a keeper of similar cross section to be screwed against the door frame,and a slidable member comprising a bolt slidable in said barrel andextendible into said keeper, a guard plate attached 7 to said bolthaving flanges extending forwardly on opposite sides of said barrel tocover the attaching screws of both the stationary member and the keeper,a locking ear carried 'by said stationary member and an actuating handlecarried by said bolt, said ear and handle having holes in registrationwhen said bolt is in locking position. to receive a padlock for securingthe bolt against unauthorized actuation.

'3. A slide bolt fastener for doors or the like, comprising a stationarymember havinga central barrel adapted to receive a bolt and outwardlyextending'fianges to be screwed against the inside of a door, a keeperof similar cross section to be screwed against the door frame, and a.slidable member comprising a bolt slidable in said barrel and extendibleinto said keeper, a guard'plate attached tosaid bolt having flangesextending forwardly onopposite sides oi said barrel to cover theattaching screws of both the stationary member and the keeper, saidstationary member havinga slot toreceive said guard plate. to permittelescoping or the slidable and stationary members,

a locking ear carried by said stationary member and an actuating handlecarried by said bolt, said ear and handle having holes in registrationwhen saidrbolt' is in looking position to receive a padlock for securingthe bolt against miauthorized actuation; 3 r I NHL 0. HOLMSTEN.

. No references cited.

